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carbon dioxide
'Words Fail': WMO Report Finds CO2 Accumulating at Record Levels
"The report is very clear: This crisis is driven by the profit-driven production of coal, oil, and gas," one climate advocacy group said.
Oct 29, 2024
Climate-heating carbon dioxide is accumulating in the atmosphere more rapidly than at any time since humans evolved.
That's just one of the alarming findings from the World Meteorological Organization's (WMO) Greenhouse Gas Bulletin, released Monday, which found that all three main greenhouse gases reached record atmospheric levels in 2023.
"Words fail," the group Climate Defiance wrote on social media in response to the news.
"Greenhouse gas pollution at these levels will guarantee a human and economic trainwreck for every country, without exception."
Atmospheric concentrations of CO2 hit 420.0 parts per million (ppm) in 2023, an increase of 151% since the Industrial Revolution and a level not seen since 3 to 5 million years ago, when global temperatures was 2-3°C hotter than today and sea levels were 10-20 meters higher. Methane hit 1,934 parts per billion (ppb)—or 265% higher than preindustrial levels—and nitrous oxide rose to 336.9 ppb, 125% of pre-1750 levels.
"Another year. Another record," WMO Secretary-General Celeste Saulo said in a statement. "This should set alarm bells ringing among decision-makers. We are clearly off track to meet the Paris agreement goal of limiting global warming to well below 2°C and aiming for 1.5°C above preindustrial levels. These are more than just statistics. Every part per million and every fraction of a degree temperature increase has a real impact on our lives and our planet."
Carbon dioxide rose by 2.3 ppm in 2023. While that was higher than the 2022 increase, it was lower than in 2019-2021. However, on a longer-term scale, atmospheric CO2 rose by 11.4% in the past 10 years, a record increase during human existence. The burning of fossil fuels is the primary cause of this increase.
"The report is very clear: This crisis is driven by the profit-driven production of coal, oil, and gas," Climate Defiance wrote. "Because of these fuels, planet-heating pollution levels have gone up by 51.5%—since 1990 alone."
However, 2023's CO2 increases were also caused by forest fires—including a record-breaking fire season in Canada—as well as a possible reduction in the ability of Earth's natural carbon sinks to absorb the greenhouse gas. While vegetation-related CO2 emissions are partially influenced by natural cycles—El Niño years like 2023 are drier and tend to see more fires—they could also be a sign of dangerous feedback loops.
"The Bulletin warns that we face a potential vicious cycle," said WMO Deputy Secretary-General Ko Barrett. "Natural climate variability plays a big role in carbon cycle. But in the near future, climate change itself could cause ecosystems to become larger sources of greenhouse gases."
"Wildfires could release more carbon emissions into the atmosphere, whilst the warmer ocean might absorb less CO2. Consequently, more CO2 could stay in the atmosphere to accelerate global warming," Barrett explained. "These climate feedbacks are critical concerns to human society."
The report also said that even if emissions were to cease rapidly, the amount of carbon dioxide in the atmosphere means that the current rise in temperatures would linger for decades.
The rise in methane is also a concern. While it increased less in 2023 than in 2022, it hit a record-high increase over the last five years, and some of this could be due to climate feedback loops such as the melting of the Arctic permafrost or greater emissions from wetlands and other natural ecosystems as temperatures rise.
As Climate Defiance noted, WMO's graph showing the rise of methane appears to move from a linear to an exponential progression as it approaches 2023.
"It could literally be the graph that defines human history," Climate Defiance wrote.
"The most infuriating part is it didn't have to be this way," the group continued. "Had we started taking action in the 1970s—when the threat became clear—we could have easily stopped the crisis by now. Instead we gorged ourselves on SUVs and McMansions as politicians dithered and delayed."
The Greenhouse Gas Bulletin is one of several annual reports released ahead of United Nations climate conferences; this year, world leaders are scheduled to gather in Baku, Azerbaijan starting on November 11 for COP29. The Bulletin comes alongside other reports finding that national policies are not on track to reduce emissions in line with the Paris agreement temperature goals.
Last week, the U.N. Emissions Gap Report concluded that current policies put the world on course for as much as 3.1°C of warming. Also on Monday, the U.N. Framework Convention on Climate Change (UNFCCC) released its 2024 Nationally Determined Contributions (NDC) Synthesis Report, in which it assesses the commitments that different nations have made to reduce emissions under the Paris agreement.
It found that current NDCs would cut greenhouse gas emissions by 2.6% of 2019 levels by 2030, a far cry from the 43% needed to have a chance at limiting global heating to 1.5°C by 2100 and preventing ever-worsening climate impacts.
"Greenhouse gas pollution at these levels will guarantee a human and economic trainwreck for every country, without exception," U.N. Climate Change Executive Secretary Simon Stiell said in a statement of the current 2030 trajectory.
"Today's NDC Synthesis Report must be a turning point, ending the era of inadequacy and sparking a new age of acceleration, with much bolder new national climate plans from every country due next year," Stiell said. "The report's findings are stark but not surprising—current national climate plans fall miles short of what's needed to stop global heating from crippling every economy, and wrecking billions of lives and livelihoods across every country."
"By contrast," Stiell continued, "much bolder new national climate plans can not only avert climate chaos—done well, they can be transformational for people and prosperity in every nation."
Climate Defiance also called for renewed ambition.
"It is not too late," the group said. "There is still a small window of opportunity. Together, we will unite to stop our own demise. We will rise. We will defy all odds. There is no alternative."
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Look Up: The Scariest Part When We See the Big, Big, Big Picture
As a new study once more makes clear, raising the temperature is by far the biggest thing humans have ever done; our effort to limit that rise must be just as large.
Oct 23, 2024
This is “Climate week” in New York City, and my inbox has been awash recently in the latest press releases about start-ups and noble initiatives and venal greenwashing. Much of it’s important, and I’ll get to some of it later, but there’s a big new study that came out last week in Science that sets our crucial moment in true perspective. Let’s step back for a moment.
This new study—a decade in the making and involving, in the words of veteran climate scientist Gavin Schmidt “biological proxies from extinct species, plate tectonic movement, disappearance in subduction zones of vast amounts of ocean sediment, and interpolating sparse data in space and time”—offers at its end the most detailed timeline yet of the earth’s climate history over the last half-billion years. That’s the period scientists call the Phanerozoic—the latest of the earth’s four geological eons (we’re still in it), and the one marked by the true profusion of plant and animal life. It’s a lovely piece of science, and it’s lovely too because it reminds us of all we’re heir to in this tiny brief moment that marks the human time on earth. So staggeringly much—strange and extreme and fecund—has come before us.
But it’s also scary as can be, for two big reasons.
The first is that it shows the earth has gotten very very warm in the past. As the Washington Post explained in an excellent analysis yesterday, “the study suggests that at its hottest the Earth’s average temperature reached 96.8 degrees Fahrenheit (36 degrees Celsius).” Our current average temperature—already elevated by global warming to the highest value ever recorded—is about 60 degrees Fahrenheit, or 15 degrees Celsius. For most of the 500 million years the study covers, the earth has been in a hothouse state, with an average temperature of 71.6 Fahrenheit, or 22 Celsius, much higher than now. Only about an eighth of the time has the earth been in its current “coldhouse” state—but of course that includes all the time that humans have been around. It is the world we know and we’re adapted to.
In every era, it’s increases in carbon dioxide that drive the increases and decreases in temperature. “Carbon dioxide is really that master dial,” Jess Tierney, a climate scientist at the University of Arizona and co-author of the study, said. And so the study makes clear that the mercury could go very high indeed as humans pour carbon into the sky. We won’t burn enough coal and oil and gas to reach the very highest temperatures seen in the geological record—that required periods of incredible volcanism—but we may well double the amount of carbon in the atmosphere, and this study implies that the fast and slow feedbacks from that could eventually drive temperatures as much as eight degrees Celsius higher, which is more than most current estimates. Over shorter time frames the numbers are just as dramatic
Without rapid action to curbgreenhouse gas emissions, scientists say, global temperatures could reach nearly 62.6 F (17 C) by the end of the century — a level not seen in the timeline since the Miocene epoch, more than 5 million years ago.
Now, you could look at those numbers and say: well, the earth has been hotter before, so life won’t be wiped out. And that’s true—there’s probably no way to wipe out life, though on a planet with huge numbers of nuclear weapons who knows. But these temperatures are much higher than anything humans have experienced, and they guarantee a world with radically different regimes of drought and deluge, radically different ocean levels and fire seasons. They imply a world fundamentally strange to us, with entirely different seasons and moods—and if that doesn’t challenge bare survival, it certainly challenges the survival of our civilizations. Unlike all the species that came before us, we have built a physical shell for that civilization, a geography of cities and ports and farms that we can’t easily move as the temperature rises. And of course the poorest people, who have done the least to cause the trouble, will suffer out of all proportion as that shift starts to happen.
But that’s not the really scary part. The really scary part is how fast it’s moving.
In fact, nowhere in that long record have the scientists been able to find a time when it’s warming as fast as it is right now. “We’re changing Earth’s temperature at a rate that exceeds anything we know about,” Tierney said.
Much much much faster than, say, during the worst extinction event we know about, at the end of the Permian about 250 million years ago, when the endless eruption of the so-called Siberian traps drove the temperature 10 Celsius higher and killed off 95 percent of the species on the planet. But that catastrophe took fifty thousand years—our three degree Celsius increase—driven by the collective volcano of our powerplants, factories, furnaces and Fords—will be measured in decades.
Our only hope of avoiding utter ruin—our only hope that our western world, in the blink of an eye, won’t produce catastrophe on this geologic scale—is to turn off those volcanoes immediately. And that, of course, requires replacing coal and gas and oil with something else. The only something else on offer right now, scalable in the few years we still have to work with, is the rays of the sun, and the wind that sun produces, and the batteries that can store its power for use at night.
Another new analysis this week, this one from the energy thinktank Ember, shows that 2024 is seeing another year of surging solar installations—when the year ends there will be 30% more solar power on this planet than when it began. Numbers like that, if we can keep that acceleration going for a few more years, give us a fighting chance.
That’s what all those seminars and cocktail parties and protests in New York over this week will ultimately be about—the desperate attempt to keep this rift in our geological history from getting any bigger than it must. As this new study once more makes clear, raising the temperature is by far the biggest thing humans have ever done; our effort to limit that rise must be just as large.
We need to stand in awe for a moment before the scope of earth’s long history. And then we need to get the hell to work.
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It's Bloody Hot and Deadly—and We Still Have No Climate Action Plan
To make a rapid, far-reaching, and unrelenting break with our fossil-fuel dependency, a national mobilization would be needed, and it would have to be a genuine all-of-society effort.
Jun 19, 2024
While April and May are usually the hottest months in many countries in Southeast Asia, hundreds of millions of people are now suffering in South Asia from an exceptionally intense heatwave that has killed hundreds. One expert has already called it the most extreme heat event in history. Record-breaking temperatures above 122°F were reported in the Indian capital of New Delhi, and temperatures sizzled to an unheard of 127°F in parts of India and Pakistan.
Nor was the blazing heat limited to Asia. Heatwaves of exceptional severity and duration are now occurring simultaneously in many areas of the world. Mexico and parts of the United States, notably Miami and Phoenix, have recently been in the grip of intense heat events. In southern Mexico, endangered howler monkeys in several states have been falling dead from trees in their tropical forests due to heat stroke and dehydration. Below-average rainfall throughout Mexico has led to water shortages in Mexico City and elsewhere. In some places, birds and bats, not to speak of humans, are also dying from the heat.
All of this is no coincidence. The hot and heavy hand of climate change is now upon us. Last year was the hottest on Earth in 125,000 years, and the concentration of heat-trapping carbon dioxide (CO2) in the atmosphere was the highest in 4 million years and still climbing at an ever-increasing rate. Meanwhile, global sea surface temperatures also reached a peak, causing severe massive coral bleaching in all three major ocean basins.
Had a foreign enemy inflicted the kind of damage caused by such floods, or the firestorms that swept California and the Pacific Northwest in 2020, or the hurricanes and droughts the nation has begun experiencing with increased frequency, the U.S. would have immediately mobilized for war.
The World Bank is projecting that, by 2050, there will be more than 200 million climate refugees, 20 times the 10 million refugees that have already destabilized Europe. Climate change is also putting an increasingly heavy burden on our social safety net, which could ultimately cause social order to begin to break down, generating chaos.
Nobel Prize-winning former Energy Secretary Steven Chu now claims it’s no longer possible to keep the global temperature from rising more than 1.5°C above the historical average, as the 195-nation signatories to the 2015 Paris climate agreement had hoped. In fact, he projects that the target of 2°C will also be broken and that, by 2050 the global temperature will have risen above 3°C. Nor is his pessimism unique. Hundreds of other scientists have recently forecast a strong possibility of hitting 2.5°C, which should hardly be surprising since, for well over 30 years now, global leaders have failed to heed the warnings of climate scientists by moving decisively to phase out fossil fuels and their heat-trapping gases.
What to make of such dire forecasts?
It could hardly be clearer that the world is already in the throes of a climate catastrophe. That means it’s high time for the U.S. to declare a national climate emergency to help focus us all on the disaster at hand. (Or as famed English poet Samuel Johnson put it centuries ago, “When a man knows he is to be hanged in a fortnight, it concentrates his mind wonderfully.”)
Such a declaration of a climate emergency is long overdue. Some 40 other nations have already done so, including 2,356 jurisdictions and local governments representing more than a billion people. Of course, a declaration alone will hardly be enough. As the world’s wealthiest and most powerful nation, and the one that historically has contributed the most legacy greenhouse gases to the atmosphere, the U.S. needs to develop a coherent exit strategy from the stranglehold of fossil fuels, a strategy that could serve as an international example of a swift and thorough clean-energy transition. But at the moment, of course, this country remains the world’s largest producer and consumer of oil and natural gas and the third largest producer of coal—and should former President Donald Trump win in November, you can kiss any possible reductions in those figures goodbye for the foreseeable future. Sadly enough, however, though the Biden administration’s rhetoric of climate concern has been strong, in practice, this country has continued to cede true climate leadership to others.
Despite the laudable examples of smaller nations like Iceland, Norway, Sweden, Paraguay, and Costa Rica that are already at, or within a percentage point or two, of being 100% powered by clean, renewable energy, the world sorely needs the U.S. as a global role model. To make a rapid, far-reaching, and unrelenting break with our fossil-fuel dependency—79% of the nation’s energy is now drawn from fossil fuels—a national mobilization would be needed, and it would have to be a genuine all-of-society effort.
National Mobilization Amid Crisis
Fortunately, there is a historical precedent for just such a comprehensive mobilization of government and citizenry in dire circumstances: former President Franklin Delano Roosevelt’s New Deal in the 1930s and the World War II years provide examples of the scale and intensity of the response needed today to reverse climate change. However, instead of gearing up to produce jobs for the unemployed or planes and tanks for a war, a concerted nationwide industrial effort is needed now to upgrade our electrical grid and produce millions of solar panels, wind turbines, batteries, carbon-capture machines, and zero-emission vehicles. All too sadly, this country and the world are now in a situation even more perilous than either the Great Depression or World War II.
Rising seas pose serious threats to major American cities, including Boston, Charleston, Miami, and New York, while, in recent years, millions of acres of the Midwest have been flooded by climate-related extreme weather events. Had a foreign enemy inflicted the kind of damage caused by such floods, or the firestorms that swept California and the Pacific Northwest in 2020, or the hurricanes and droughts the nation has begun experiencing with increased frequency, the U.S. would have immediately mobilized for war. Now, this country needs to do exactly that to face the climate crisis, but (even forgetting the horrifying possibility that Donald Trump could win the coming presidential election and sink any possibility of moving on climate change nationally for years to come) how to get our act together?
As French author Antoine de Saint-Exupéry wrote in his classic 1943 novella, Le Petit Prince, “A goal without a plan is just a wish.” In other words, a national climate action plan is urgently needed.
Left to its own devices, without strong public pressure, Congress might basically ignore or fail to enact legislation to implement the results of a National Climate Action Plan, especially if Congress were still controlled by the fossil-fuel-loving Republican Party.
In the Trump years of climate-science denial, any progress in controlling emissions resulted from actions by states, cities, and businesses or institutions. Over the long term, however, climate policy is far too important to be left to a hodgepodge of laws and policies haphazardly applied across some of our 50 states and thousands of cities and businesses. What this country needs is a plan guided by scientific and technical analysis and based on an ambitious but attainable set of greenhouse-gas-reduction quotas. Its point would not be to override the climate agendas of any city, state, or group, or the aspirations of the Green New Deal (House Resolution HR 109). It would simply be to provide a reliable toolkit of measures and policies along with analyses of their costs and benefits—a compass for getting to negative carbon emission as quickly and cost-effectively as possible.
This country today has no comprehensive climate action plan that proposes clear, enforceable targets, timelines, and roadmaps for climate protection and restabilization—and it desperately needs one. Call it America’s Energy Transition: Achieving a Clean Energy Future and imagine that it would build on previous authoritative studies, analyzing renewable-energy-generating and distribution technologies in terms of their costs, commercial readiness, resource constraints, and potential efficiency. It would formulate and model competing scenarios with clusters of complementary technologies, each requiring different policies for its implementation.
From such an exercise, Americans would learn how to achieve the greatest greenhouse gas reductions with the most speed and cost-effectiveness, as well as the fewest unwanted impacts, while best meeting this country’s ongoing energy needs. Such a study would also reveal the demands on natural resources of each scenario along with its costs and the manufacturing capacity required.
To build trust and engagement in the final plan, regional advisory councils made up of scientists, engineers, businesspeople, and major stakeholder representatives should be created to offer recommendations on how best to adapt such a plan to conditions in each part of the country. The final policy roadmap would then be designated as the “optimal energy path scenario” for the nation and provided to Congress, so that it could use the findings as a basis for funding and implementing new climate legislation.
Without Political Action, Don’t Hold Your Breath for a Bold Climate Plan
Left to its own devices, without strong public pressure, Congress might basically ignore or fail to enact legislation to implement the results of a National Climate Action Plan, especially if Congress were still controlled by the fossil-fuel-loving Republican Party. A Republican stranglehold on Congress and/or the White House would undoubtedly stymie both the creation of a national climate plan and the implementation of its findings, as well as the clean-energy transition it would facilitate.
To prevent such a setback from occurring, a strong popular constituency must be built nationwide capable of exerting powerful pressure on Congress to ensure the creation of a climate plan and the appropriate legislation to make it functional. Otherwise, no matter how sound the PR campaign on its behalf, serious political obstacles would stand in the way of its adoption, even by a Democratic Congress.
Through its lobbying, think tanks, public relations arms, and advertising, the politically and economically powerful fossil-fuel industry has, for decades, blocked meaningful climate legislation in both Democratic and Republican congresses. The creation of a powerful, broad coalition of constituencies—environmental, labor, public health, faith-based, and even progressive elements of the business community—could serve as a popular countervailing force against the mighty fossil-fuel industry. But as a first step, that coalition would need support, guidance, and a common accepted platform both to stand behind and to mobilize the public. The American environmental community could produce that platform. Yet this would not be a simple matter, due to the way that community is siloed, with each major organization catering to its own constituency, interests, and funders.
To create a common consensual vision around which the national climate movement could mobilize, a broad civil society gathering should be convened to attract the leadership of all environmental and climate action groups and set the stage for the National Climate Action Plan. That gathering would, of course, focus on the roadblocks to implementing such a plan and to a swift, national clean-energy transition—and how those roadblocks could be dismantled.
Put all of this together and you would have a nation mobilized against the fossil-fuel industry, ready to create a climate action plan and mobilize Americans in an all-of-society effort on behalf of slashing national carbon emissions in a radical fashion, accelerating a clean-energy transition, and protecting our endangered world. What more could you ask for?
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